GL-RM10 Flicker issue

Hello,

I have 3 GL-RM10 but this happens on one of them.

It keeps flickering making it very annoying to use.

I have tried resets, updates, different edid, settings, cables, devices, etc.. always the same behavior.

Is there a fix for this or it’s broken?

Thank you.

Support is telling me this behavior is a network issue when I have a Deco BE65 at home, a 10 Gbit internet, I am testing this locally and I have 2 other devices where this is not happening.

How can this behavior be a network issue?

What kind of specialists are at work in this company?